blob: 0b8bce8d0703a80ad5abacdd5a482d11b6a44849 [file] [log] [blame]
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ios/chrome/browser/browser_about_rewriter.h"
#include <string>
#include "base/feature_list.h"
#include "base/logging.h"
#include "base/stl_util.h"
#include "components/url_formatter/url_fixer.h"
#include "ios/chrome/browser/chrome_url_constants.h"
#include "ios/chrome/browser/ui/ui_feature_flags.h"
#include "url/url_constants.h"
namespace {
const struct HostReplacement {
const char* old_host_name;
const char* new_host_name;
} kHostReplacements[] = {
{"about", kChromeUIChromeURLsHost},
{"sync", kChromeUISyncInternalsHost},
} // namespace
bool WillHandleWebBrowserAboutURL(GURL* url, web::BrowserState* browser_state) {
GURL original_url = *url;
// Ensure that any cleanup done by FixupURL happens before the rewriting
// phase that determines the virtual URL, by including it in an initial
// URLHandler. This prevents minor changes from producing a virtual URL,
// which could lead to a URL spoof.
*url = url_formatter::FixupURL(url->possibly_invalid_spec(), std::string());
// Check that about: URLs are fixed up to chrome: by url_formatter::FixupURL.
// 'about:blank' is special-cased in various places in the code so it
// shouldn't be transformed.
DCHECK(!url->SchemeIs(url::kAboutScheme) ||
(url->path() == url::kAboutBlankPath));
// url_formatter::FixupURL translates about:foo into chrome://foo/.
if (!url->SchemeIs(kChromeUIScheme))
return false;
// Translate chrome://newtab back into about://newtab so the WebState shows a
// blank page under the NTP.
if (url->GetOrigin() == kChromeUINewTabURL) {
GURL::Replacements replacements;
*url = url->ReplaceComponents(replacements);
return *url != original_url;
std::string host(url->host());
for (size_t i = 0; i < base::size(kHostReplacements); ++i) {
if (host != kHostReplacements[i].old_host_name)
GURL::Replacements replacements;
*url = url->ReplaceComponents(replacements);
// Having re-written the URL, make the chrome: handler process it.
return false;